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// Kvant
// Archive
Kvant,
2021
Number 7,
Pages
19–20
(Mi kvant3656)
Çàäà÷íèê «ÊÂÀÍÒÀ»
Çàäà÷è Ì2658–Ì2661, Ô2665–Ô2668
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Steklov Math. Inst. of RAS
, 2025